Latest News & Events
Learn more about the latest Delphi Diagnostics news and the Endocrine Activity Index (EAI) Test by reading the press releases below. EAI is known in publications as the Sensitivity to Endocrine Therapy (SET2,3) Test. Clicking on the links below will take you to the full text news pages.
Latest News
- The project will combine data from two key clinical trials to assess the value of the SET2,3 assay in HR+/HER2− breast cancer patients with lymph node involvement.
- The aim of this collaboration is to advance the personalization of adjuvant treatment and improve therapeutic decision-making.
- The initiative brings together international experts and strengthens translational research in breast cancer.
Madrid, 23 June 2026 – GEICAM Spanish Breast Cancer Group, UNICANCER and the biotechnology company Delphi Diagnostics have announced a new international scientific collaboration to carry out a pooled analysis project of the sensitivity to endocrine therapy assay (SET2,3), a molecular biomarker of growing relevance in breast cancer. SET2,3 is known commercially as the Endocrine Activity Index Recurrence Risk (EAIRR) and as SET2,3for research purposes.
This analysis independently validated previous findings and further helps to establish EAI as the first genomic assay shown to predict benefit from a contemporary taxane-based chemotherapy regimen in HR+/HER2− breast cancer.
June 22, 2026, Houston, Texas – Delphi Diagnostics today announced the publication of findings from the GEICAM/9906 clinical trial demonstrating that the company’s Endocrine Activity Index (EAI) can identify patients with hormone receptor-positive, HER2-negative (HR+/HER2−) breast cancer who derive meaningful benefit from adjuvant chemotherapy containing weekly paclitaxel.
All News
February 16, 2026
Data Presented at SABCS 2025 Demonstrated that the Endocrine Activity Index® (EAI®) May Identify Patients Most Likely to Benefit from Extended Endocrine Therapy
February 10, 2026
Data Presented at SABCS 2025 Reinforce the Endocrine Activity Index® (EAI®) as a Powerful Tool to Inform Treatment Decisions in HR+/HER2- Breast Cancer
December, 2025
Delphi Diagnostics Co-Founder and Lead Inventor W. Fraser Symmans Honored with a Brinker Award by the Susan G. Komen® Foundation
November 4, 2025
Delphi Diagnostics® Announces Four Abstracts and One General Session Presentation Featuring the Endocrine Activity Index® to be Presented at the San Antonio Breast Cancer Symposium
March 5, 2025
New Data Confirms Endocrine Activity Index® as a Predictor of Benefit from Dose-Dense Chemotherapy
August 5, 2024
Two Abstracts Highlighting the Endocrine Activity Index were Presented at the 2024 Annual Society of Clinical Oncology Meeting
April 2, 2023
Delphi Diagnostics® Inc. Announces a Strategic Partnership with Protean BioDiagostics to Offer the Endocrine Activity Index
March 9, 2023
Delphi Diagnostics™ Inc Announces a Publication Showing that the Sensitivity-to-Endocrine-Therapy (SET2,3) Index had Prognostic Value that was Independent and Complementary to the 21-gene Recurrence Score (Oncotype DX®) in Node-Positive Breast Cancer
October 27, 2022
Delphi Diagnostics™ Inc and Quantum Leap Healthcare Collaborative™ Announce the Inclusion of Delphi’s Proprietary Test, SET2,3™, into the Adaptive Randomization Process for the Ongoing I-SPY 2 TRIAL™
September 22, 2022
Delphi Diagnostics™ Inc. Announced the Issuance of a New U.S. Patent Covering the Sensitivity to Endocrine Therapy (SETER/PR) Test Through 2037
June 13, 2022
SET2,3 Results Can Determine Prognosis and Prediction of Benefit from Dose-Dense Chemotherapy in Estrogen Receptor-Positive (ER+) Breast Cancer Presented at ASCO 2022
December 14, 2021
SET2,3 index adds independent, complementary information to personalize breast cancer treatment
Latest Events
ASCO - Annual Meeting
American Society of Clinical Oncology (ASCO)
Chicago, IL
May 29 – June 2, 2026
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